Black Lantern Marketing – Prerender Case Study
When Black Lantern Marketing discovered persistent soft 404s across several client sites, they turned to Prerender.io to fix their rendering issues. Within six weeks, the agency achieved a 100% reduction in soft 404s and an 80% improvement in indexing performance, restoring visibility and stability across their client portfolio.
Black Lantern Marketing, a performance-driven digital agency working with clients across iGaming, travel, and telecom, was facing a recurring technical issue: JavaScript rendering errors causing soft 404s and duplicate content problems across several high-value client websites.
One example was a JS-heavy travel platform offering custom European itineraries. Despite strong content, key pages weren’t being indexed correctly. Googlebot struggled to render the site’s JavaScript, resulting in soft 404s, misinterpreted duplicates, and poor visibility for their main commercial pages.
Black Lantern’s team explored multiple potential solutions, including adjustments within Cloudflare and manual rendering optimizations. However, none fully solved the rendering inconsistencies or indexing challenges.
That’s when they discovered Prerender.io through industry research, peer recommendations, and the SEO community.
After reviewing implementation options, Black Lantern integrated Prerender.io via Cloudflare: a straightforward, low-effort setup that required minimal engineering work.
The integration was completed within days, and within just six weeks, the team saw measurable improvements across key rendering and indexing metrics.
Their process included:
Together, these optimizations helped Google correctly interpret and index the right versions of every key page on the client’s site, Go Real Travel.
The impact was immediate:
✅ 100% elimination of soft 404s across key client sites.
✅ 80% improvement in indexing performance, restoring visibility to pre-issue levels and stabilizing organic traffic.
✅ Faster recognition of new and updated pages by search engines.
✅ Simplified maintenance across client environments thanks to easy Cloudflare integration and scalable configuration options.
What began as a technical fix became a foundational SEO improvement that elevated performance across multiple client portfolios.
From an agency perspective, Black Lantern found Prerender.io’s implementation straightforward, adaptable, and dependable across different client setups.
Nicolas Monti-Potsolakis
✅ Prerender.io helped Black Lantern restore full indexing for complex, JavaScript-heavy sites in less than two months.
✅ The agency now uses Prerender.io as a go-to rendering solution for clients across industries where dynamic content and SEO visibility intersect.
✅ Implementation was fast, stable, and scalable — perfectly suited to agency workflows handling multiple client profiles.
Black Lantern Marketing is a performance-focused SEO and digital marketing agency working with global brands across travel, iGaming, and telecom. The team specializes in solving complex technical SEO challenges through scalable, data-driven solutions.
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